- mem_malloc_end = (CONFIG_SYS_MALLOC_BASE + CONFIG_SYS_MALLOC_LEN);
- mem_malloc_start = CONFIG_SYS_MALLOC_BASE;
- mem_malloc_brk = mem_malloc_start;
- memset ((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
+ mem_malloc_start = start;
+ mem_malloc_end = start + size;
+ mem_malloc_brk = start;
+
+ memset ((void *)mem_malloc_start, 0, size);